JEE Mains · Physics · STD 12 - Wave optics
- JEE Mains 2025
- Easy
- MCQ
Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : In Young's double slit experiment, the fringes produced by red light are closer as compared to those produced by blue light.
Reason (R): The fringe width is directly proportional to the wavelength of light.
In the light of the above statements, choose the correct answer from the options given below.
Pick an option to check your answer.
Answer & Solution
Correct Answer
(D) (A) is false but (R) is true
Step-by-step Solution
Detailed explanation
\(\begin{aligned}
& \beta=\frac{\lambda D}{d} \\
& \lambda_{\text {red }} < \lambda_{\text {blue }}
\end{aligned}\)
Assertion is false.
Reason is true.
& \beta=\frac{\lambda D}{d} \\
& \lambda_{\text {red }} < \lambda_{\text {blue }}
\end{aligned}\)
Assertion is false.
Reason is true.
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